Bridge-timber conveyer.



|. JAMES.

BRIDGE TIMBER CONVEYER. APPLI CATION FILED APR. 15. I915.

Patented Apr. 9,1918.

A Ir Y m E N m m m .w. T

w M m A WITNESSES eras . IVER JAMES, OF OAKLAND, CALIFORNIA.

onion.

BRIDGE-TIMBER CONVEYER.

Specification of Letters Patent.

Patented Apr. 9, 1918.

Application filed April 15, 1915. Serial No. 21,601.

veyers, of which the following is a specification.

This invention relates to improvements in conveyors and more particularly to a device of this character adapted to replace the longitudinal timbers of bridges, trestles, and the like. The principal object of my invention is to provide a device of this character which may be inserted under the track on a bridge, to remove and replace the timbers with the least expenditure of time and effort,

Another object of my invention is to provide a device which is convenient to attach to the adjacent structure and which is con venient to transport from place to place.

With these and other objects in view my invention consists in the novel construction, arrangement and combination of parts as herein described and more particularly pointed out in the appended claim.

Reference being had to the accompanying drawing forming a part of this specification,

Figure 1 is a view in cross section through the top portion of a bridge structure showing my device in elevation in position thereon.

Fig. 2 is an enlarged view in section through the conveyer adjacent the head end.

Fig. 3 is a fragmentary view with one of the side plates removed.

Referring to corres onding parts by the same numerals of re erence, 1 denotes the longitudinal bridge timbers on which is supthe upper edges of the side members 5. The

return length of this chain passes on rollers 8 pivotally mounted in the lower end of the conveyer frame. One end of the chain passes around the drum or idler wheel 10, while the other end passes around the sprocket wheel 12. The latter is keyed to shaft 13, which extends through suitable bearings in the side plate 5 and has on the outside of the latter the removable crank handles 15. On the opposite end the side members 5 are provided with hook shaped this chain being then carried downwardly and wrapped around a convenient portion of the bridge structure thereby preventing this portion of the conveyer from being raised when the weight of the timber comes on the opposite end.

In use two of the conveyors are positioned approximately, in the manner shown in Fig. 1, and the timber to be replaced is lifted onto the lower end of the conveyer after having raised the track, as shown. Then by means of the crank handles 15, this timber is conveyed to the upper part where it may be readily lifted and a new timber laid onto the conveyer and lowered into position.

It will thus be apparent that I have provided a device which quickly performs the functions set forth in the beginning of the specification and while I have shown the preferred embodiment of my invention it will be understood that various changes may be made in form and construction without departing from the scope of the claim.

What I claim as new and wish to cover by Letters Patent is A conveyer of the character described comprising longitudinal side members, a web having its edges attached to said side members near one edge of the latter and maintaining them in spaced relation, an endless conveyer chain having one flight resting upon and supported by said web, spaced apart rollers mounted between the side bars and supporting the other flight of said conveyer chain, means for imparting movement to the conveyer chain, curved kit Q 1,2e2,5se

timber-engaging hooks secured to the side members at one end and positioned to engage the underside of a rigidly supported timber, and a flexible securing device at-v in presence of two witnesses.

IVER JAMES.

tached to the side members at the other end, Witnesses:

and acting to prevent upward movement of" W, A. STOCK, said end. B. M; QZARZO.

Comes of this patent may be obtained for five cents each, Var addressing the Commissioner of Patents,

Washington, D. G.

In testimony whereof, I aflix my signature 

